Simple Interest Calculator

Quickly determine your interest and simplify your financial planning using our simple interest calculator for loans and savings.
Simple Interest Calculator

A simple interest calculator is a handy financial tool that helps users calculate simple interest on a principal amount over a fixed period at a specified rate. By entering the principal, interest rate, and tenure, users can instantly determine the simple interest earned and the total maturity amount. This tool is ideal for estimating returns on investments, managing loans, and planning finances effectively.

What is simple interest?

Simple interest is calculated only on the initial principal amount. It remains constant throughout the investment or loan term. The formula is I = P * r * t, where I is the interest, P is the principal amount, r is the annual interest rate, and t is the time in years. This straightforward calculation makes it easy to understand and apply, particularly for short-term loans and investments. It benefits borrowers and investors by providing predictable returns or costs without the complexity of compound interest, ensuring transparency and simplicity in financial planning.

What is simple interest calculator?

A simple interest calculator is a valuable tool for assessing interest on a principal amount. Here's how it helps:

  • Input Requirements:
    • Principal: The initial amount of money invested or borrowed.
    • Interest Rate: Interest rate is the annual percentage rate applicable for your loan.
    • Time: The duration for which the money is invested or borrowed, typically in years.
  • Functionality:
    • Computes the interest based on the provided inputs.
    • Offers a clear understanding of the financial impact of the investment or loan.
  • Benefits:
    • Helps in making informed financial decisions.
    • Simplifies the process of interest calculation.
    • Provides immediate results, enhancing financial planning and budgeting.

Using this tool ensures you have a precise grasp of your financial commitments and returns, aiding better financial management.

How to calculate simple interest?

Understanding how interest accumulates is essential for better financial planning. The simple interest EMI calculator simplifies this process, helping users estimate their total interest and maturity amount within seconds. By entering the principal amount, interest rate, and tenure, individuals can instantly determine their payable or earned interest.

The simple interest formula is, I = P × R × T/100,

In this formula, the variables are as follows:

I

Simple Interest

P

Principal

R

Rate of Interest

T

Time


To make it clear, I is the interest, P is the principal amount, r is the annual interest rate, and t is the time the money is invested or borrowed in years. Multiply the three values for the simple interest amount. This equation for simple interest makes it easy to compute simple interest based on the input parameters. For a faster process, you can use an SI Calculator to calculate simple interest online.

How to use the Bajaj Finance simple interest calculator?

Using our simple interest loan calculator is straightforward. Input the following details:

  • Principal amount
  • Annual interest rate
  • The time period the money is invested or borrowed for.

The calculator will promptly provide the simple interest amount. It's a convenient tool for quick financial planning and decision-making. Adjust inputs as needed for accurate results.

When do you use the simple interest formula?

The simple interest formula is used to calculate the interest earned or paid on a loan or investment when the interest is not compounded. It is commonly used for short-term loans or investments where interest is not added to the principal amount. Simple interest is often used in consumer loans, such as a car loan or a personal loan, where the interest is calculated based on the original loan amount and not on any previously accrued interest. Using monthly simple interest calculator makes the calculation precise and convenient. For easier understanding:

  • When borrowing money: Individuals repay an additional sum of interest along with the borrowed amount. The simple interest formula aids in calculating the borrowing cost as interest.
  • When lending money: Individuals earn interest income in return for providing funds. Utilizing the simple interest formula enables one to easily determine the additional income earned as interest.
  • When investing money: Individuals who invest their surplus funds in schemes such as fixed deposits (FD), recurring deposits (RD), or savings schemes like Public Provident Fund (PPF), or Sukanya Samriddhi Yojana (SSY) can calculate their interest income using a simple interest calculator.

What financial instruments use simple interest?

Simple interest is a common method used in various financial instruments to calculate interest on the principal amount. These instruments are straightforward, making them popular for short-term financial needs and investments. Here are some examples where simple interest is applied:

  • Personal loans:
    • Some personal loans are often structured with fixed interest rates.
    • Borrowers can use a simple interest loan EMI calculator to estimate their monthly payments.
    • The interest remains constant over the loan term, simplifying repayment schedules.
  • Car loans:
    • Typically, some car loans involve simple interest calculations.
    • Lenders charge interest on the original loan amount.
    • Borrowers benefit from predictable and easy-to-understand payment plans.
  • Short-term business loans:
    • In some cases, these are designed for immediate financial needs with a fixed repayment term.
    • Simple interest provides clarity on the total interest payable.
    • Businesses can plan their cash flow effectively using a simple interest loan EMI calculator.
  • Savings accounts:
    • Some savings accounts offer simple interest on the deposited amount.
    • Interest is calculated based on the initial deposit without compounding.
    • Ideal for those seeking straightforward returns on their savings.

Using a simple interest loan EMI calculator for these instruments helps in accurately determining monthly instalments and overall interest, ensuring informed financial decisions and effective budgeting.

Advantages of using our simple interest loan calculator

Our simple interest loan calculator offers ease of use, providing quick and accurate results for interest calculations. It assists in financial planning, allowing users to assess loan terms transparently. The user-friendly interface ensures accessibility, making it a valuable tool for informed decision-making in loans and investments. To summarise, below are the key reasons why you should use an online simple interest calculator:

  • Accuracy: Online calculators provide precise calculations, eliminating human error.
  • Efficiency: Instant results save time compared to manual calculations.
  • Accessibility: Accessible from anywhere with an internet connection, making it convenient.
  • Comparison: Allows for easy comparison of different interest rates and terms.
  • Educational Tool: Helps users understand how interest is calculated.
  • Planning: Enables better financial planning by estimating interest costs accurately.
  • Convenience: Available 24/7, allowing users to calculate interest whenever needed.
  • Cost-Effective: Free to use, saving money on complex financial calculations.
  • User-Friendly: Typically, simple interfaces that are easy to navigate.
  • Privacy: Allows users to calculate interest without sharing personal financial details.

How can a simple interest calculator help you?

A simple interest loan calculator is a useful tool for quickly determining interest on borrowed or invested amounts. By entering the principal amount, interest rate, and tenure, you can instantly calculate the total interest payable or earned. This helps in financial planning, enabling borrowers to estimate EMIs and investors to assess returns. The calculator eliminates manual calculations, ensuring accuracy and saving time. It is beneficial for personal loans, fixed deposits, and other financial products based on simple interest. Use this tool to make informed financial decisions and effectively manage your repayments or investments.

Frequently asked questions

How to calculate simple interest?

Calculate simple interest using the formula I = P * r * t, where I is the interest, P is the principal amount, r is the annual interest rate (in decimal form), and t is the time the money is invested or borrowed in years. Multiply the three values for the simple interest amount.

Where can I use a simple interest calculator?

You can use it for loans, savings accounts, investments, and any situation involving fixed interest rates over a specific period.

Are there any online simple interest calculators available for free?

Yes, Bajaj Finance Limited offers free online simple interest calculator that is easy to use.

What is the simple interest on Rs. 8,000 at 12% p.a. for 4 years?

The simple interest is Rs. 3,840. Calculation: I = P × r × t = 8000 × 0.12 × 4 = 3,840.

How to calculate instalments in simple interest?

Instalments in simple interest are calculated by adding the principal and total interest, then dividing by the number of months. Use a simple interest loan calculator for accuracy.

Do interest rates on principal amounts change over time in SI?

No, in simple interest, the interest rate remains fixed throughout the tenure. It is calculated only on the principal amount, ensuring a constant interest amount over time.

How do I calculate simple interest monthly?

To calculate monthly simple interest, use the formula: SI = (P × R × T) / 100, where T is in months (T/12 for yearly rates). For quick and accurate results, you can use a simple interest calculator monthly to determine the interest effortlessly.

What is the difference between simple interest and compound interest?

Simple interest is calculated only on the principal, while compound interest includes accumulated interest.  Read more - Difference between simple and compound interest.

How is a simple interest calculator different from a compound interest calculator?

A simple interest calculator computes interest on the principal alone, while a compound interest calculator factors in accumulated interest for long-term growth.

Show More Show Less

Disclaimer

1. Bajaj Finance Limited (“BFL”) is a Non-Banking Finance Company (NBFC) and Prepaid Payment Instrument Issuer offering financial services viz., loans, deposits, Bajaj Pay Wallet, Bajaj Pay UPI, bill payments and third-party wealth management products. The details mentioned in the respective product/ service document shall prevail in case of any inconsistency with respect to the information referring to BFL products and services on this page.

2. All other information, such as, the images, facts, statistics etc. (“information”) that are in addition to the details mentioned in the BFL’s product/ service document and which are being displayed on this page only depicts the summary of the information sourced from the public domain. The said information is neither owned by BFL nor it is to the exclusive knowledge of BFL. There may be inadvertent inaccuracies or typographical errors or delays in updating the said information. Hence, users are advised to independently exercise diligence by verifying complete information, including by consulting experts, if any. Users shall be the sole owner of the decision taken, if any, about suitability of the same.